If you running Windows 7 as your VM you must have SA or VDA.. With those you are entittled to "Windows Thin PC" It's basically Windows 7 Embedded ported to a PC.
It's small and it's windows 7. It has write filters to lock the drive so on a reboot the image is back to prestine condition. It can be managed easily as well.
It runs the Windows VMWare View 5 Client with no issues. You get everything you want and more.
It's also included if you have SA or VDA.
Larry B